/* Authentication Page Styles */

.auth-page {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
}

.auth-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1200px;
    width: 100%;
    background: white;
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    min-height: 600px;
}

.auth-card {
    padding: var(--space-12) var(--space-8);
    display: flex;
    flex-direction: column;
}

.auth-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.auth-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--space-6);
    gap: var(--space-2);
}

.auth-logo i {
    font-size: var(--font-size-2xl);
}

.auth-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-2);
}

.auth-subtitle {
    color: var(--gray-600);
    font-size: var(--font-size-lg);
}

.auth-form {
    flex: 1;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
}

.form-label i {
    font-size: var(--font-size-sm);
    color: var(--primary-color);
}

.form-input {
    width: 100%;
    padding: var(--space-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    transition: var(--transition);
    background-color: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input.error {
    border-color: var(--danger-color);
}

.form-input.success {
    border-color: var(--success-color);
}

.form-hint {
    display: block;
    color: var(--gray-500);
    font-size: var(--font-size-xs);
    margin-top: var(--space-1);
}

.password-input-group {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.password-toggle:hover {
    color: var(--primary-color);
    background-color: var(--gray-50);
}

.password-strength {
    margin-top: var(--space-2);
}

.strength-meter {
    height: 4px;
    background-color: var(--gray-200);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: var(--space-1);
}

.strength-fill {
    height: 100%;
    width: 0%;
    transition: var(--transition-slow);
    border-radius: 2px;
}

.strength-fill.weak {
    background-color: var(--danger-color);
    width: 25%;
}

.strength-fill.fair {
    background-color: var(--warning-color);
    width: 50%;
}

.strength-fill.good {
    background-color: var(--secondary-color);
    width: 75%;
}

.strength-fill.strong {
    background-color: var(--success-color);
    width: 100%;
}

.strength-text {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
    gap: var(--space-2);
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--gray-700);
    gap: var(--space-2);
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius);
    position: relative;
    transition: var(--transition);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: translate(-50%, -60%) rotate(45deg);
}

.forgot-link,
.auth-link,
.terms-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.forgot-link:hover,
.auth-link:hover,
.terms-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.divider {
    text-align: center;
    margin: var(--space-6) 0;
    position: relative;
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background-color: var(--gray-200);
    z-index: 1;
}

.divider span {
    background-color: white;
    padding: 0 var(--space-4);
    position: relative;
    z-index: 2;
}

.social-login {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.btn-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-4);
    border: 2px solid var(--gray-200);
    background-color: white;
    color: var(--gray-700);
    font-weight: 500;
    transition: var(--transition);
}

.btn-social:hover {
    border-color: var(--gray-300);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-google:hover {
    border-color: #db4437;
    color: #db4437;
}

.btn-facebook:hover {
    border-color: #4267B2;
    color: #4267B2;
}

.auth-footer {
    text-align: center;
    color: var(--gray-600);
}

.auth-image {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-8);
    color: white;
}

.auth-illustration {
    text-align: center;
    max-width: 400px;
}

.auth-illustration i {
    font-size: 80px;
    margin-bottom: var(--space-6);
    opacity: 0.9;
}

.auth-illustration h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.auth-illustration p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-8);
    opacity: 0.9;
    line-height: 1.6;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-base);
}

.feature-item i {
    color: var(--accent-color);
    font-size: var(--font-size-lg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-8);
}

.stat-item {
    text-align: center;
}

.stat-item .stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-1);
}

.stat-item .stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: var(--transition);
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    text-align: center;
    color: white;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-4);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-spinner p {
    font-size: var(--font-size-lg);
    margin: 0;
}

/* Responsive Design */
@media (max-width: 968px) {
    .auth-container {
        grid-template-columns: 1fr;
        max-width: 500px;
    }
    
    .auth-image {
        display: none;
    }
    
    .auth-card {
        padding: var(--space-8) var(--space-6);
    }
}

@media (max-width: 640px) {
    .auth-page {
        padding: var(--space-2);
    }
    
    .auth-card {
        padding: var(--space-6) var(--space-4);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }
    
    .social-login {
        gap: var(--space-2);
    }
    
    .btn-social {
        padding: var(--space-3);
        font-size: var(--font-size-sm);
    }
}

/* Form validation states */
.form-group.has-error .form-input {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-group.has-success .form-input {
    border-color: var(--success-color);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-error {
    color: var(--danger-color);
    font-size: var(--font-size-xs);
    margin-top: var(--space-1);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.form-error i {
    font-size: var(--font-size-xs);
}

.form-success {
    color: var(--success-color);
    font-size: var(--font-size-xs);
    margin-top: var(--space-1);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.form-success i {
    font-size: var(--font-size-xs);
}

/* Animation for form elements */
.form-group {
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Focus styles for better accessibility */
.form-input:focus,
.btn:focus,
.checkbox-label:focus-within,
.password-toggle:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Loading state for buttons */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}